Primer commit limpio para Gitea

backend/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+CMD ["python", "app.py"]

backend/app.py

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+import os
+import sqlite3
+from flask import Flask, send_from_directory
+
+app = Flask(__name__)
+DB_PATH = os.environ.get('DB_PATH', '/app/db/pendientes.db')
+
+
+def init_db():
+    os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)
+    conn = sqlite3.connect(DB_PATH)
+    conn.execute('''
+        CREATE TABLE IF NOT EXISTS pendientes (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            descripcion TEXT NOT NULL,
+            fecha TEXT NOT NULL,
+            estado TEXT NOT NULL,
+            urgencia TEXT NOT NULL
+        )
+    ''')
+    conn.commit()
+    conn.close()
+
+
+@app.route('/')
+def index():
+    return send_from_directory('/app/frontend', 'index.html')
+
+
+if __name__ == '__main__':
+    init_db()
+    app.run(host='0.0.0.0', port=5000)

backend/requirements.txt

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+Flask==3.0.0